During _______ a cell grows, duplicates organelles, and copies DNA.
What is interphase?
100
The proteins that organize and condense long strands of DNA into tight coils?
What are histones?
100
Uncontrolled cell growth caused by mutations in genes that control the cell cycle.
What is cancer?
100
Most single-celled, prokaryotic organisms reproduce only by ________ ________.
What is Binary fission?
100
A type of cell that can divide and renew for long periods of time, can remain undifferentiated for long periods of time, and can develop into specialized cells.
What is a stem cell?
200
During this part of the cell cycle, a cell carries out its normal functions.
What is gap 1 (G1)?
200
DNA condenses and chromosomes become visible during which phase of mitosis?
What is prophase?
200
A tumor that can metastasize to other parts of the body.
What is malignant?
200
The offspring that result from asexual reproduction are genetically identical to the parent organism except when _____ occur.
What are mutations?
200
A group of organs that work together.
What is an organ system?
300
In this stage of the cell cycle, the nucleus and its contents divide.
What is mitosis?
300
Chromosomes line up at the equator of the cell during this phase of mitosis.
What is Metaphase?
300
Kinases and cyclins are internal factors that
a. cause apoptosis.
b. cause cancer cells to break away.
c. prevent mitosis.
d. control the cell cycle.
What is d. control the cell cycle.
300
When a parent organism splits into pieces, each of which forms a new organism.
What is fragmentation? .
300
Stem cells are important to multicellular organisms because of their capacity to _____________.
What is differentiate?
400
The maximum size of a cell is limited by this.
What is the ratio of cell surface area to volume
400
Sister chromatids separate from each other in this phase of mitosis.
What is anaphase?
400
Proteins that bind to cells and stimulate cell division are called
growth factors.
enzymes.
kinases.
carcinogens.
What are growth factors?
400
Vegetative reproduction, budding, and fragmentation are examples of ___________ mitotic reproduction.
What is asexual?
400
Cells in a developing embryo differentiate based on
their ________ in the embryo.
What is location?
500
Cells lining the stomach divide more quickly than those in the liver because they:
What is "undergo more wear and tear"?
500
After mitosis creates 2 identical nuclei, this process splits the cell contents into two daughter cells.
What is cytokinesis?
500
A hormone present in the blood can stimulate the growth of certain cells. The hormone is acting as a(n)
external factor.
daughter cell.
oncogene.
carcinogen.
What is an external factor?
500
In a single-celled organism, mitosis is used for ____
What is reproduction?
500
A stem cell that can grow into ALL cell types in the body.